Submitted on: 07 March 2010.
Revised on: 11 May 2010.
Accepted on: 14 June 2010.
___________________Advances in Civil Engineering---HINDAWI LTD
Submitted on: 04 June 2018.
Revised on: 11 August 2018.
Accepted on: 06 October 2018.
___________________Advances in Civil Engineering---HINDAWI LTD
Submitted on: 07 April 2018.
Revised on: 07 June 2018.
Accepted on: 01 July 2018.
___________________Advances in Civil Engineering---HINDAWI LTD
Submitted on: 16 January 1998.
Revised on: 20 April 1998.
Accepted on: 06 June 1998.
___________________Advances in Civil Engineering---HINDAWI LTD
http://reply.papertrans.cn/1/8/705/705-35.png
http://reply.papertrans.cn/1/8/705/705-36.png